package test06;

/**
 * Created by tianxiadiyishuai on 2017/10/15.
 */
public class Circle {
    //属性:半径、周长和面积
    double raduis;
    double area;
    double perimeter;
    //行为:返回周长、面积
    double area(){return 3.14*2*raduis;}
    double perimeter(){return 3.14*raduis*raduis;}
    //构造函数
    //main函数
    public static void main(String[] args) {

    }
}
